Portable work bench



FIG. 1 is a front perspective view of a portable work bench showing our new design, with the support arms in an extended position.

FIG. 2 is a left side elevational view.

FIG. 3 is a right side elevational view.

FIG. 4 is a front elevational view with the support arms in an extended position.

FIG. 5 is a rear elevational view with the support arms in an extended position.

FIG. 6 is a top plan view with the support arms in an extended position; and,

FIG. 7 is a bottom plan view with the support arms in an extended position.

All environmental structure shown is not part of the claimed design. 

The ornamental design for a portable work bench, as shown and described. 